1616197 has 18 divisors (see below), whose sum is σ = 1925574. Its totient is φ = 1354320.

The previous prime is 1616183. The next prime is 1616201. The reversal of 1616197 is 7916161.

It can be written as a sum of positive squares in only one way, i.e., 1572516 + 43681 = 1254^2 + 209^2 .

It is not a de Polignac number, because 1616197 - 2¹¹ = 1614149 is a prime.

It is a super-2 number, since 2×1616197² = 5224185485618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616297) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43663 + ... + 43699.

2^1616197 is an apocalyptic number.

It is an amenable number.

1616197 is a deficient number, since it is larger than the sum of its proper divisors (309377).

1616197 is a wasteful number, since it uses less digits than its factorization.

1616197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 67 counting only the distinct ones).

The product of its digits is 2268, while the sum is 31.

The square root of 1616197 is about 1271.2973688323. The cubic root of 1616197 is about 117.3540545001.

The spelling of 1616197 in words is "one million, six hundred sixteen thousand, one hundred ninety-seven".